Kingflex
Direct factory supply of high-grade NBR/PVC closed-cell rubber foam insulation roll products optimized for London's major commercial development projects.
London, as a global financial and architectural hub, is undergoing a massive shift towards decarbonization and structural efficiency. Following the strict directives of the London Plan 2021 and the UK’s mandate to achieve Net Zero Carbon by 2050, there is an unprecedented demand for premium insulation materials. Modern skyscrapers, heritage office refurbishments, and extensive underground mechanical networks across the City of London require insulation solutions that deliver high thermal efficiency in compact designs.
Elastomeric rubber foam insulation sheet rolls provide the perfect answers to these urban engineering challenges. Due to space constraints in retrofitting historical structures throughout Kensington, Westminster, and Camden, traditional bulky fiberglass panels are no longer feasible. Flexible rubber foam, with its thin footprint, outstanding thermal conductivity (λ ≤ 0.034 W/m·K at 0°C), and high flexibility, has become the go-to standard for mechanical engineers in the capital.
Why Tier-1 London contractors prioritize certified closed-cell rubber foam insulation sheet rolls for major commercial and institutional projects.
For any insulation product imported into the UK and installed in London's built environment, safety and fire compliance are paramount. In compliance with Approved Document B (Fire Safety) and the BS 476 Standard, our elastomeric foam sheets achieve the coveted Class 0 and Class 1 ratings.
These ratings guarantee low flame spread index and minimal toxic smoke generation, safeguarding occupants in densely populated spaces like shopping centers, hospitals, and train stations. The closed-cell structure operates with a moisture vapor permeability index exceeding 10,000 (μ value), meaning that a secondary vapor barrier is completely unnecessary. This mitigates the risk of Corrosion Under Insulation (CUI), a common and costly structural issue faced by older London properties.
"Kingflex NBR/PVC closed-cell foams are certified to BS 476 Parts 6 & 7 Class 0, ensuring they are suitable for high-occupancy projects and complex HVAC infrastructure globally."
| Performance Characteristic | NBR/PVC Elastomeric Foam Value | Test Standard Reference | Benefit for London Engineers |
|---|---|---|---|
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ASTM C518 / BS EN 12667 | Reduces energy losses, minimizes HVAC system loads |
| Moisture Vapor Permeability (μ) | ≥ 10,000 | BS EN 12086 / ASTM E96 | Prevents condensation build-up, prevents mold growth |
| Fire Safety Rating | Class 0 (Flame spread & heat release) | BS 476 Parts 6 & 7 | Approved for commercial interiors, high-rise buildings |
| Density range | 40 - 55 kg/m³ | ASTM D1622 | Maintains structure under mechanical stress, lightweight |
| Operating Temp. Range | -40°C to +105°C | BS EN 14706 / ASTM C411 | Versatile: dual-temperature HVAC systems & steam pipes |
| Sound Isolation Index | Up to 32 dB attenuation | ASTM E90 | Reduces mechanical noise levels in offices/residences |
Established as an energy-saving and environmental-friendly combo under the Jinwei Group (which has over 40 years of manufacturing history since 1979), Kingflex Insulation stands at the forefront of global thermal materials research and production. Centered in Dacheng, China—the renowned capital of green building materials—our facilities combine advanced research, manufacturing, and global trading services.
By placing energy reduction at our core, we supply integrated solutions for thermal insulation, cold preservation, and acoustic dampening across dynamic construction sectors. Our plant features 5 automated assembly lines generating an annual output exceeding 600,000 cubic meters. This immense capacity ensures we can meet large-scale project requirements and supply timelines for fast-paced commercial builds throughout the UK and mainland Europe.
Our commitment to compliance, tracing, and high performance is validated by international regulatory bodies.
Every batch of Kingflex Rubber Foam Insulation Sheet Rolls undergoes strict quality assurance. We operate full product traceability protocols from raw NBR/PVC polymer mixing down to the individual shipping container. This quality level is certified under CE, REACH, RoHS, UL94, and ASTM standards.
High-integrity insulation sheets and pre-formed piping designed to accelerate job site installation and secure maximum durability.
Material: Premium NBR/PVC blend
Thickness: 6mm - 50mm
Density: 40 - 55 kg/m³
Service Temp Range: -40℃ to 105℃
1. Foams evenly and fully, closed-cell rate exceeds 98%.
2. Low moisture absorption, ensuring long-term thermal conductivity.
3. Compression resilience over 80%.
4. Self-extinguishing flame-retardant formulation.
Material: High-density NBR/PVC
Thickness: 9mm - 40mm
Internal Diameter (ID): 6mm - 114mm
Service Temp Range: -40℃ to 105℃
1. Professional extrusion ensures structural density uniformity.
2. High mechanical strength resisting physical crushing.
3. Excellent flexibility simplifies routing around complicated bends.
4. Drastically reduces risks of pipeline freezing and bursting.
We understand that purchasing building materials internationally requires reliable supply chains and clear communication. Over 16 years of export history, we have optimized our supply paths from Tianjin Port directly to London Gateway, Felixstowe, and the Port of London. Our dedicated trade specialists manage customs clearances, certificate processing, and shipping container layouts to minimize local handling fees and maximize load capacity.
Additionally, we work closely with local logistics firms across Greater London to deliver materials directly to job sites, warehouses, or staging yards. This ensures that large-scale projects can maintain strict building schedules without supply chain delays.
Aligning manufacturing capabilities with the UK's green building codes and international environmental standards.
As the construction industry shifts from standard thermal resistance toward holistic lifecycle assessments, we prioritize low Global Warming Potential (GWP) and zero Ozone Depletion Potential (ODP) blowing agents. Our engineering lab is currently developing next-generation aerogel-elastomeric hybrids designed to improve thermal performance without increasing layer thickness.
In addition, our manufacturing processes are designed to minimize waste by recycling off-cuts back into the initial extrusion cycle. This helps our clients earn valuable credits under modern green building programs like BREEAM (UK) and LEED (US).
Answers to common questions from project specifiers and procurement managers regarding elastomeric foam sheet rolls.
Explore our full range of elastomeric rubber foam insulation rolls, sheets, and tubes, engineered for commercial and industrial applications.
Get in touch for customized dimensions, detailed fire safety reports, or volume pricing for projects in London and globally.
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